webpack.config.js

// Generated using webpack-cli https://github.com/webpack/webpack-cli

const path = require("path");

const isProduction = process.env.NODE_ENV == "production"
const TerserPlugin = require('terser-webpack-plugin');

const config = {
  entry: "./isr.js",
  output: {
    path: path.resolve(__dirname, "dist"),
  },
  plugins: [
    // Add your plugins here
    // Learn more about plugins from https://webpack.js.org/configuration/plugins/
  ],

  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        minify: TerserPlugin.uglifyJsMinify,
        terserOptions: {},
      }),
    ],
  },

  module: {
    rules: [
      {
        test: /\.(js|jsx)$/i,
        loader: "babel-loader",
      },
      {
        test: /\.(eot|svg|ttf|woff|woff2|png|jpg|gif)$/i,
        type: "asset",
      },

      // Add your rules for custom modules here
      // Learn more about loaders from https://webpack.js.org/loaders/
    ],
  },
};

module.exports = () => {
  if (isProduction) {
    config.mode = "production";
  } else {
    config.mode = "development";
  }
  return config;
};